Question

176

How to map json object to array

rated 0 times [ 179] [ 3] / answers: 1 / hits: 34444 / 5 Years ago, wed, january 23, 2019, 12:00:00

I have json:

{

  userList:

  [{

    name: Bob,

    age: 28

  },{

    name: Tom,

    age: 45

  },{

    name: Alice,

    age: 32

  }]

}

I want to cut only age and put them to array like : public mainChartData1: Array = [28, 45, 32];

I have started to do that by next code:

  const arr = this.users.map(obj => {



    var localObj = [];

      localObj[obj] = obj.age;

      return localObj;



    });

But it doesn't work.

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markusdamienn

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1 Year ago

answered 5 Years ago josefn · Accepted Answer

You can use a little map function to extract the array age

const inputObject = {

  userList:

  [{

    name: Bob,

    age: 28

  },{

    name: Tom,

    age: 45

  },{

    name: Alice,

    age: 32

  }]

  };

  

  const output = inputObject.userList.map(user => user.age);

  console.log(output);